We can change vacant land for productivity to plant rice and other crops to meet food needs, but due to laziness and unwillingness to use existing land for the agricultural sector and food needs are not fulfilled. In addition, farmers who make ends meet from food income also do not get support from the government, they always experience losses from cheap local food prices because the government accepts exports of food ingredients from other countries and does not prioritize local material prices to support the welfare of local farmers.
More precisely not not getting support from the government, but many players (distributors) who accommodate rice to be exported outside, I am sure the government is starting to seriously pay attention to this sector, but not so the maximum supervision is carried out.
If I am not mistaken the intention you want to convey, there are several steps that can be taken to minimize the problem, because the agricultural sector is also very close to inflation and recession. What I understand is there are two points from you convey?
1. National scale foodThe government can limit exports abroad to local products and buy every harvest that is owned by its people, so that the supply of raw materials and rice is stable again in the market. While market prices must be guarded and guarded by related agencies, so there are no games from distributors for food security problems. Regulations are needed to give sanctions if there are some elements violating the rules for food security, even though it looks complicated and difficult, if the government is serious then I'm sure it will look easy.
2. Household scale foodThis can be utilized by small land available around the yard or vacant land that is less productive, at least for weekly and monthly when harvest conditions are not good, the community can use these plants. The problem of people today is too lazy to plant their own needs, because according to them can be purchased even though the price is expensive.
Another reason that causes scarcity because of the games of distributors in regulating market prices and existing raw materials, So they deliberately create scarcity conditions in the market and can increase prices when everything happens. This area needs to be strengthened by the government with strict regulations and sanctions for anyone who violates, because in reality food is an important source in most countries in the world.